Create Spiral Model in PowerPoint Easily

The spiral model you’ll learn in this tutorial is:

Though the diagram looks simple, it is not so easy to draw this diagram in PowerPoint. In this tutorial you’ll learn to create the diagram in a simple and effective way. But, before that a quick word about…

Spiral life cycle model or Incremental model:

The spiral or Incremental model is usually used in software development. The model is designed, implemented and tested incrementally till the product is finished. Since it follows the philosophy of iterative development, the process is also called as prototyping model.

Though the model is quite specific to Software development, the concept is readily applicable in most management and strategic presentations. That is why we thought of giving you step wise instructions on drawing this useful model.

Let us get on with our lesson right away…

1. Draw a set of semicircular arcs

The easiest way to create a spiral diagram is by drawing and merging semi circular arcs.

Go to Auto shapes and select the Arc tool.

Extend the yellow handles till you create a perfect semicircular shape. Test the shape by drawing a flat line and placing the arc on top as shown here:

Getting the arc in a proper semi circular shape is extremely vital for the accuracy of the diagram. Once you get the shape right, make 7 copies of the shape apart from the original one.

Select an arc, go to Format ribbon and enter the height and width as 0.75 each. This will create a semi circular arc with 0.75pt as diameter.

The same way create arcs with diameters of 1.5, 2.25, 3.0, 3.75, 4.5, 5.25 and 6.0pt. Once done, select them all -> Arrange -> Align -> Align Centre and Align Middle. You will get the following result:

2. Group alternative arcs and flip them vertically

The next step is to select alternative arcs and color them red using ‘Shape Outline Color’ option.

Now, group the red and black arcs separately. Select the ‘black arcs’ group -> Arrange -> Rotate -> Flip Vertical. You will get the following result:

Diagram options for business presentations:

Models like the one you learned in this article are essential for any business presenter to communicate their business messages effectively. But, not all business presenters have the time to create these diagrams from the scratch.

That is why we came up with our ‘CEO diagrams pack’ – which has 750+ high quality, fully editable PowerPoint Charts and Diagram templates for busy business presenters like you. Please take a look at some of the samples from the pack:

You just need to copy the diagrams from the pack to your slides and replace sample text. Your professional presentation gets ready in minutes. It is a smart way to utilize your valuable time. Please browse through our templates collection and see how the pack can change the way you create presentation slides forever.